CN108360686B - Integral installation device of net rack and construction method thereof - Google Patents
Integral installation device of net rack and construction method thereof Download PDFInfo
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- CN108360686B CN108360686B CN201810224306.3A CN201810224306A CN108360686B CN 108360686 B CN108360686 B CN 108360686B CN 201810224306 A CN201810224306 A CN 201810224306A CN 108360686 B CN108360686 B CN 108360686B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B1/3511—Lift-slab; characterised by a purely vertical lifting of floors or roofs or parts thereof
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
- E04B2001/3588—Extraordinary methods of construction, e.g. lift-slab, jack-block using special lifting or handling devices, e.g. gantries, overhead conveying rails
Abstract
The invention discloses a net rack integral installation device and a construction method thereof. The construction method comprises the following steps: 1) Installing a support of the original structure of the net rack; 2) Manufacturing a temporary support for a high-altitude rod repairing of a grid node; 3) Assembling a grid structure; 4) Installing a temporary balance support and a main balance support; 5) Installing a hydraulic oil cylinder for lifting; 6) Lifting the net rack; 7) A net frame overhead supplementing rod; 8) Removing the temporary support for the overhead repairing rod of the grid frame node; 9) Dismantling the self-balancing adjusting shoulder pole beam; 10 Removing the temporary balance support and the main balance support; 11 A temporary support frame is removed. In the lifting process, self-balancing is realized among symmetrical stress points on the temporary support frame, and the center of the lifting device and the center of the temporary support frame are positioned on the same vertical line, so that the stress of the axle center of the temporary support frame is ensured; and the accurate pole of mending of rack increases the security and the accuracy of construction that the rack promoted.
Description
Technical Field
The invention belongs to the technical field of site assembly and construction of grid structure systems, and particularly relates to a grid integral installation device and a construction method thereof.
Background
The prior grid structure system has rapid development, and is widely applied to building facilities such as gymnasiums, theatres, exhibition halls, stadiums, airports and the like because of the advantages of light weight, high rigidity, good earthquake resistance and the like. The structure has larger whole span under the general condition, and can meet the requirements of various large-span public buildings on structural systems. The conventional construction method of the grid structure comprises the following steps: lifting equipment such as hydraulic cylinders are arranged at a plurality of points above the grid frame, and the integral lifting of the grid frame structure is realized through synchronous lifting controlled by a computer. The construction method has several problems: (1) The integral lifting of the grid structure is required to be provided with a temporary supporting frame, a plurality of lifting force points are arranged on the temporary supporting frame, if no reliable measure is adopted, the resultant force of the lifting force points is inconsistent with the axis of the temporary supporting frame, and the temporary supporting frame is eccentrically stressed, so that the control difficulty of the integral stability of the temporary supporting frame is further improved, and even the potential safety hazard that the control is difficult due to instability occurs in the dynamic installation process; (2) In the whole lifting process, the rod pieces overlapped with the horizontal projection surface of the temporary support frame can be lifted in place by the whole structure, so that the high-altitude rod supplementing safety measure cost is increased, the economy is improved, and the effect of the temporary support frame is not fully exerted for ensuring the high-altitude safety rod supplementing and arranging a corresponding high-altitude rod supplementing operation platform device.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art and provide a net rack integral installation device and a construction method thereof, wherein a self-balancing adjusting part is positioned at the top end of a temporary support frame, so that self-balancing is realized between symmetrical stress points on the temporary support frame in the lifting process, the center of the lifting device and the center of the temporary support frame are positioned on the same vertical line, and the axle center of the temporary support frame is ensured to bear stress; the temporary support is arranged on the temporary support frame and used for the high-altitude rod supplementing of the grid frame node, and the temporary support system not only provides positioning points for the high-altitude rod supplementing of the grid structure, but also provides an operation platform device for the high-altitude rod supplementing, so that the grid structure can safely, economically and accurately complete the high-altitude rod supplementing process and form a whole before the temporary support frame is dismantled, the safety of the grid structure in the lifting construction process and the construction accuracy are improved, and the construction efficiency is further improved.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a net rack integral erection device which characterized in that: comprises a self-balancing lifting device, a temporary support for high-altitude rod supplementing of the grid frame node and a temporary support frame; the self-balancing lifting device comprises a self-balancing adjusting part and a lifting point converting part, wherein the self-balancing adjusting part comprises a single self-balancing adjusting shoulder pole beam, two temporary balancing supports and a single main balancing support, the central position of the self-balancing adjusting shoulder pole beam and the central position of the temporary supporting frame are positioned on the same vertical line, the main balancing support is connected between the central position of the self-balancing adjusting shoulder pole beam and the central position of the temporary supporting frame, the two temporary balancing supports are symmetrically arranged on two sides of the central line of the main balancing support, two hydraulic cylinders which are symmetrically arranged are arranged at the top of the self-balancing adjusting shoulder pole beam, and a lifting rope is movably connected with the single hydraulic cylinder and penetrates through the self-balancing adjusting shoulder pole beam to be connected with the lifting point converting part; the main balance support comprises a balance support main ear plate and a first support short column, wherein the balance support main ear plate at the upper part is welded and fixed with the self-balance adjustment shoulder pole beam, a balance support steel pin shaft is arranged between the upper and lower balance support main ear plates, the balance support main ear plate at the lower part is connected with the first support short column at the upper part, the upper and lower first support cylinders are mutually and fixedly connected, and the first support short column at the lower part is welded and fixed with the temporary support frame; the temporary support for the overhead repairing rod of the grid node comprises a temporary support bottom plate and a temporary support, the temporary support bottom plate is fixed on a support girder of the temporary support frame through a temporary support connecting bolt, the temporary support bracket is arranged on the temporary support bracket bottom plate through welding, the top of the temporary support bracket is provided with a grid node ball, the top shape of the temporary support bracket is matched with the grid node ball, and the placement of the grid node ball for high-altitude rod supplementing is facilitated. The self-balancing adjusting part is positioned at the top end of the temporary support frame, so that self-balancing is realized among symmetrical stress points on the temporary support frame in the lifting process, the center of the lifting device and the center of the temporary support frame are positioned on the same vertical line, and the temporary support frame is ensured to always bear stress on the axle center and not generate eccentric bearing force; in addition, the temporary support system for the high-altitude rod supplementing of the grid structure provides the grid node ball positioning points and the operation platform device for the high-altitude rod supplementing of the grid structure, so that the high-altitude rod supplementing process of the grid structure is safely, economically and accurately completed and integrated before the temporary support frame is dismantled, the safety of the grid structure in the construction process and the construction accuracy are improved, and the construction efficiency is further improved.
Further, a first column end plate is welded between the lower balance support main lug plate and the upper first support short column, so that connection between the lower balance support main lug plate and the upper first support short column is facilitated.
Further, the bottom of the first supporting short column at the upper part and the top of the first supporting short column at the lower part are respectively provided with a first connecting plate, a first connecting bolt is arranged between the upper first connecting plate and the lower first connecting plate, the upper first supporting short column and the lower first supporting short column are fixedly connected with each other, and the upper first supporting short column is conveniently detached from the top of the lower first supporting short column.
Further, the temporary balance support comprises a temporary connection lug plate and a second support short column, wherein the temporary connection lug plate positioned above is welded and fixed with the self-balance adjustment shoulder pole beam, a temporary connection steel pin shaft is arranged between the upper temporary connection lug plate and the lower temporary connection lug plate, the temporary connection lug plate positioned below is connected with the second support short column positioned above, the upper second support short column and the lower second support short column are fixedly connected with each other, and the second support short column positioned below is welded and fixed with the temporary support frame. The temporary balance support is simple in structure and convenient to assemble and disassemble, and the two temporary balance supports play a role in balancing and supporting the self-balancing adjustment shoulder pole beam in the installation and disassembly processes of the self-balancing adjustment shoulder pole beam, so that the installation and the disassembly of a subsequent hydraulic cylinder are facilitated, and the safety of the self-balancing adjustment shoulder pole beam and the hydraulic cylinder in the installation and disassembly processes is guaranteed.
Further, a second column end plate is welded between the lower temporary connection lug plate and the upper second support short column, so that connection between the lower temporary connection lug plate and the upper second support short column is facilitated.
Further, the bottom of the second supporting short column at the upper part and the top of the second supporting short column at the lower part are respectively provided with a second connecting plate, and a second connecting bolt is arranged between the upper second connecting plate and the lower second connecting plate, so that the upper second supporting short column and the lower second supporting short column are fixedly connected with each other, and the upper second supporting short column is conveniently detached from the top of the lower second supporting short column.
Further, the lifting point conversion part comprises a lifting point conversion carrying pole beam and a lifting point connection lug plate, the lifting point conversion carrying pole beam is connected with a lifting rope, the lifting point connection lug plate positioned above is welded at the bottom of the lifting point conversion carrying pole beam, a lifting point connection steel pin shaft is arranged between the upper lifting point connection lug plate and the lower lifting point connection lug plate, and the lifting point connection lug plate positioned below is used for connecting a net rack. The hoisting point conversion part can connect the hoisting points with the self-balancing adjusting part and the net rack, so that the stability of the net rack structure in two directions in the hoisting plane is greatly improved, the balance and stability control in the net rack hoisting process are facilitated, and the concentrated stress of each hoisting point is reduced.
Further, a lifting rope tray is welded at the bottom of the lifting point conversion shoulder pole beam, and the lifting rope tray limits the tail end of the lifting rope, so that the end part of the lifting rope is firmly fixed.
The construction method of the integral installation device of the net rack is characterized by comprising the following steps of:
1) Installing a grid original structure support on the top of the structural column, and taking the grid original structure support as a grid to be lifted to an elevation reference point of a design site;
2) Installing a temporary support frame in an area surrounded by a structural column according to the height reference position of a support of an original structure of the grid frame, welding a support beam at a section of the temporary support frame, which is 200mm away from the designed elevation of the grid frame, on a support bottom plate of the temporary support, welding a support of the temporary support, which is positioned at the horizontal projection position of a grid frame node ball, and arranging a groove matched with the outline dimension of the grid frame node ball at the top of the temporary support, so as to manufacture a temporary support for a high-altitude support of the grid frame node, and fixing the support bottom plate of the temporary support on the support beam by adopting a temporary support connecting bolt;
3) Assembling a grid structure on a construction site, temporarily not assembling grid ball joints overlapped with the temporary support frame at a horizontal projection position and grid rod pieces, and performing subsequent high-altitude rod supplementing operation after the grid is lifted into position;
4) Installing two symmetrically arranged temporary balance supports on the top of the temporary support frame, welding a lower first support short column at the central position of the top of the temporary support frame, fixedly connecting an upper first support short column at the top end of the lower first support short column, connecting the upper first support short column with a lower balance support main lug plate, manufacturing a self-balance adjusting shoulder pole beam, selecting a self-balance adjusting shoulder pole beam with a specified length according to a design drawing, drilling holes at the design position of the self-balance adjusting shoulder pole beam, enabling the drilled holes to be matched with the diameter of a lifting rope, welding an upper balance support main lug plate at the central position of the bottom of the self-balance adjusting shoulder pole beam, connecting the self-balance adjusting shoulder pole beam with the temporary balance support, and simultaneously connecting the upper balance support main lug plate and the lower balance support main lug plate by adopting a balance support steel pin shaft to complete connection of the self-balance adjusting shoulder pole beam and the main balance support;
5) Installing lifting hydraulic cylinders at the design positions of the tops of the two ends of the self-balancing adjusting shoulder pole beam through bolts, enabling a lifting rope to pass through holes formed in the self-balancing adjusting shoulder pole beam, installing a lifting point conversion part at the lower end of the lifting rope, and fixedly connecting the lifting point conversion part with a net rack to ensure that the lifting rope is in a tensioning state;
6) Removing a temporary balance support at the top of the temporary support frame, reserving a main balance support, enabling a lifting device formed by a self-balance adjusting shoulder pole beam and a hydraulic oil cylinder to be in a self-balance state in a single hinge mode, then checking all connection nodes, starting the hydraulic oil cylinder after checking, lifting a lifting rope under the action of the hydraulic oil cylinder, lifting a grid frame along the temporary support frame under the action of the lifting rope, firstly performing test lifting by 10-20 cm, recording hydraulic oil cylinder working data, adjusting the lifting power of the hydraulic oil cylinder according to the hydraulic oil cylinder working data, and ensuring that the lifting performance is not abnormal;
7) After the test lifting is qualified, continuously starting the hydraulic cylinder, integrally lifting the net rack until the edge rod pieces of the net rack are matched with the original net rack structure support, stopping the lifting operation of the hydraulic cylinder, adjusting the position of the net rack, then carrying out rod supplementing and connection fixing on the edge rod pieces of the net rack and the original net rack structure support, placing a net rack node ball for high-altitude rod supplementing in a temporary support groove, taking the net rack node ball for high-altitude rod supplementing as a reference position, supplementing the rod pieces overlapped with the horizontal projection of the temporary support frame, and connecting the supplemented rod pieces with the net rack node ball according to design requirements;
8) Firstly, screwing out the temporary support connecting bolts, and then integrally dismantling the temporary support brackets and the temporary support bracket bottom plates to separate the grid structure from the temporary support frame;
9) Installing two symmetrically arranged temporary balance supports on the top of the temporary support frame again, connecting the temporary balance supports with the self-balancing adjustment shoulder pole beam, unloading the lifting rope, removing the hydraulic cylinder on the self-balancing adjustment shoulder pole beam, and removing the self-balancing adjustment shoulder pole beam;
10 Removing the temporary balance support again at the top of the temporary support frame, and removing the main balance support at the same time;
11 The temporary support frame is removed, and the integral installation work of the net rack is completed.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the self-balancing adjusting part comprises a single self-balancing adjusting shoulder pole beam, two temporary balancing supports and a single main balancing support, wherein the center position of the self-balancing adjusting shoulder pole beam and the center position of the temporary supporting frame are positioned on the same vertical line, the main balancing support is connected between the center position of the self-balancing adjusting shoulder pole beam and the center position of the temporary supporting frame, and the two temporary balancing supports are symmetrically arranged about the center line of the main balancing support. Before lifting the net frame, firstly installing two symmetrical temporary balance supports at the top of the temporary support frame, installing a main balance support at the central position of the top of the temporary support frame, then connecting the self-balance adjustment shoulder pole beam with the temporary balance support, simultaneously connecting the self-balance adjustment shoulder pole beam with the main balance support, temporarily balancing the support to the self-balance adjustment shoulder pole beam, installing a hydraulic cylinder and a lifting rope on the self-balance adjustment shoulder pole beam, installing a lifting point conversion part at the lower end of the lifting rope, fixedly connecting the lifting point conversion part with the net frame, ensuring that the lifting rope is in a tensioning state, transmitting the tensile force provided by the lifting rope to a connecting node of the net frame structure through the shoulder pole beam, greatly improving the stability of the net frame structure in two directions in the lifting plane, being beneficial to reducing the concentrated stress of each lifting point, facilitating the balance and stability control in the net frame lifting process, forming a balance system by the rope tensile force at the two ends of the self-balance adjustment shoulder pole beam, and improving the stability of the temporary support frame system in the net frame lifting process. When the net frame is lifted, the main balance support is arranged at the center of the top of the temporary support frame, the two temporary balance support frames are removed, acting force generated when the hydraulic oil cylinder is lifted is transmitted to the temporary support frame through the residual main balance support frames, the self-balance adjusting shoulder pole beam and the main balance support frames are connected through a balance support steel pin shaft arranged between an upper balance support main ear plate and a lower balance support main ear plate, the upper first support short columns and the lower first support short columns are fixedly connected with each other, the first support short columns below are fixedly welded with the temporary support frame to form a single-hinge joint system, the temporary support frame is guaranteed to be in an axle center stress mode, no bending moment is generated, self balance is realized between symmetrical stress points on the temporary support frame, the center of the lifting device and the center of the temporary support frame are prevented from being on the same vertical line, and axle center stress of the temporary support frame is guaranteed.
2. When the temporary support is used for manufacturing the overhead repairing rod of the grid node, a temporary support bracket consisting of a plurality of vertical steel plates is welded at the horizontal projection position of the grid node ball on the support bottom plate of the temporary support bracket, and the top of the temporary support bracket is provided with a groove with the same shape as the grid node ball. When the net rack is lifted in place, the net rack is integrally lifted to the edge rod piece of the net rack and the net rack original structure support are matched as the reference, then the net rack node ball for the high-altitude compensation rod is placed in the temporary support supporting groove, the net rack node ball for the high-altitude compensation rod is used as the position reference, the rod piece overlapped with the horizontal projection of the temporary support frame is completed, the completed rod piece is connected with the net rack node ball according to the design requirement, the net rack is enabled to be accurately compensated before the temporary support frame is removed, the net rack structure is enabled to be integrated, the safety in the lifting process of the net rack structure and the construction accuracy are improved, and the construction efficiency is further improved.
3. According to the invention, the temporary support bracket and the temporary support bracket bottom plate are integrally removed, so that the grid structure is separated from the temporary support frame, then the temporary balance support is reinstalled to release the lifting rope, the hydraulic cylinder on the self-balance adjustment shoulder pole beam is removed, then the temporary balance support is removed again at the top of the temporary support frame, meanwhile, the main balance support is removed, and finally the temporary support frame is removed. According to the invention, lifting force unloading and temporary support frame unloading are performed after the grid frame is installed, the unloading steps are performed reasonably and orderly, and the safety and stability of the grid frame in place are improved under the condition that the integral structure of the grid frame is not affected.
4. All parts in the invention are finished products, the whole process is simple to operate, and the device formed by the invention adopts green steel and can be reused.
5. The invention has clear principle, easy implementation and operation, general control requirement and easy popularization.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic view of the structure of an integral installation device of a net rack according to the present invention;
FIG. 2 is a schematic view of a self-balancing lifting device according to the present invention;
FIG. 3 is a schematic view of the temporary balance support structure of the present invention;
FIG. 4 is a schematic view of the structure of the main balance support of the present invention;
FIG. 5 is a schematic structural view of a temporary support for overhead beam repair of a grid node in the invention;
fig. 6 is a plan view of the temporary support frame installation of the present invention.
In the figure, 1: a self-balancing lifting device; 1-1: a self-balancing adjustment section; 1-1-1: self-balancing adjusting shoulder pole beams; 1-1-2: temporarily balancing the support; 1-1-2-1: temporarily connecting the ear plates; 1-1-2-2: temporarily connecting a steel pin shaft; 1-1-2-3: a second support stub; 1-1-2-4: a second column end plate; 1-1-2-5: a second connecting plate; 1-1-2-6: a second connecting bolt; 1-1-3: a main balance support; 1-1-3-1: balance supporting main ear plate; 1-1-3-2: balance supporting steel pin shafts; 1-1-3-3: a first column end plate; 1-1-3-4: a first support stub; 1-1-3-5: a first connecting bolt; 1-1-3-6: a first connection plate; 1-2: a hanging point converting section; 1-2-1: the lifting point converts the shoulder pole beam; 1-2-2: the hanging point is connected with the lug plate; 1-2-3: the hanging point is connected with the steel pin shaft; 1-2-4: a lifting rope tray; 2: temporary supports for high-altitude rod supplementing of grid nodes; 2-1: a temporary support is supported; 2-2: supporting the bottom plate by a temporary support; 2-3: a temporary support connecting bolt; 3: a temporary support frame; 4: a hydraulic cylinder; 5: a hanging rope; 6: grid node balls; 7: a structural column; 8: and (5) supporting the joist.
Detailed Description
As shown in fig. 1 to 6, the invention relates to a net rack integral installation device, which comprises a self-balancing lifting device 1, a temporary support 2 for a net rack node high-altitude rod supplementing and a temporary support frame 3.
The self-balancing lifting device 1 comprises a self-balancing adjustment part 1-1 and a lifting point conversion part 1-2. The self-balancing adjustment part 1-1 comprises a single self-balancing adjustment shoulder pole beam 1-1-1, two temporary balancing supports 1-1-2 and a single main balancing support 1-1-3. The center positions of the self-balancing adjusting shoulder pole beams 1-1-1 and the temporary supporting frames 3 are positioned on the same vertical line, the main balancing supporting seats 1-1-3 are connected between the center positions of the self-balancing adjusting shoulder pole beams 1-1-1 and the temporary supporting frames 3, and the two temporary balancing supporting seats 1-1-2 are symmetrically arranged on two sides of the center line of the main balancing supporting seats 1-1-3. The top of the self-balancing adjusting shoulder pole beam 1-1 is provided with two hydraulic cylinders 4 which are symmetrically arranged, the single hydraulic cylinder 4 is movably connected with a lifting rope 5, and the lifting rope 5 penetrates through the self-balancing adjusting shoulder pole beam 1-1 and is connected with the lifting point conversion part 1-2.
The main balance support 1-1-3 comprises a balance support main lug plate 1-1-3-1 and a first support short column 1-1-3-4, wherein the balance support main lug plate 1-1-3-1 positioned above is welded and fixed with the self-balance adjustment shoulder pole beam 1-1, and a balance support steel pin shaft 1-1-3-2 is arranged between the upper and lower balance support main lug plates 1-1-3-1. The lower balancing support main ear plate 1-1-3-1 is connected with the upper first support short column 1-1-3-4: a first column end plate 1-1-3-3 is welded between the lower balance support main ear plate 1-1-3-1 and the upper first support short column 1-1-3-4, so that the connection between the lower balance support main ear plate 1-1-3-1 and the upper first support short column 1-1-3-4 is facilitated. The upper and lower first supporting short columns 1-1-3-4 are fixedly connected with each other: the bottoms of the upper first supporting short columns 1-1-3-4 and the tops of the lower first supporting short columns 1-1-3-4 are respectively provided with a first connecting plate 1-1-3-6, a first connecting bolt 1-1-3-5 is arranged between the upper first connecting plate 1-1-3-6 and the lower first connecting plate 1-3-6, the upper first supporting short columns 1-1-3-4 and the lower first supporting short columns 1-3-4 are fixedly connected with each other, and the upper first supporting short columns 1-1-3-4 are conveniently detached from the tops of the lower first supporting short columns 1-1-3-4. The first supporting short columns 1-1-3-4 positioned below are welded and fixed with the temporary supporting frame 3. The main balance support 1-1-3 is simple in structure and convenient to assemble and disassemble, the main balance support 1-1-3 is connected with the self-balance adjustment shoulder pole beam 1-1 to form a single-hinge joint system, the temporary support frame 3 is guaranteed to be in an axle center stress mode, and the eccentric stress condition of the temporary support frame 3 in the lifting process is avoided.
The temporary balance support 1-1-2 comprises a temporary connection lug plate 1-1-2-1 and a second support short column 1-1-2-3, wherein the upper temporary connection lug plate 1-1-2-1 is welded and fixed with the self-balance adjustment shoulder pole beam 1-1, and a temporary connection steel pin shaft 1-1-2-2 is arranged between the upper temporary connection lug plate 1-1-2-1 and the lower temporary connection lug plate 1-2-1. The temporary connection lug 1-1-2-1 located below is connected to the second support stud 1-1-2-3 located above: a second column end plate 1-1-2-4 is welded between the lower temporary connection lug plate 1-1-2-1 and the upper second support short column 1-1-2-3, so that the connection between the lower temporary connection lug plate 1-1-2-1 and the upper second support short column 1-1-2-3 is facilitated. The upper and lower second supporting short columns 1-1-2-3 are fixedly connected with each other: the bottom of the second supporting short column 1-1-2-3 positioned above and the top of the second supporting short column 1-1-2-3 positioned below are respectively provided with a second connecting plate 1-1-2-5, a second connecting bolt 1-1-2-6 is arranged between the upper and lower second connecting plates 1-1-2-5, the upper and lower second supporting short columns 1-1-2-3 are fixedly connected with each other, and the upper second supporting short column 1-1-2-3 is conveniently detached from the top of the lower second supporting short column 1-1-2-3. The second supporting short columns 1-1-2-3 positioned below are welded and fixed with the temporary supporting frame 3. The temporary balance support 1-1-2 is simple in structure and convenient to assemble and disassemble, the two temporary balance supports 1-1-2 play a role in balancing and supporting the self-balancing adjustment shoulder pole beam 1-1, the subsequent installation and disassembly of the hydraulic cylinder 4 are facilitated, and the safety of the installation and the disassembly of the hydraulic cylinder 4 is improved.
The lifting point converting part 1-2 comprises a lifting point converting shoulder pole beam 1-2-1 and a lifting point connecting lug plate 1-2-2, and the lifting point converting shoulder pole beam 1-2-1 is connected with a lifting rope 5. The bottom of the lifting point conversion shoulder pole beam 1-2-1 is welded with a lifting rope tray 1-2-4, and the lifting rope tray 1-2-4 limits the tail end of the lifting rope 5, so that the end part of the lifting rope 5 is firmly fixed. The lifting point connecting lug plates 1-2-2 positioned above are welded at the bottom of the lifting point conversion shoulder pole beam 1-2-1, a lifting point connecting steel pin shaft 1-2-3 is arranged between the upper lifting point connecting lug plate 1-2-2 and the lower lifting point connecting lug plate 1-2-2 is used for connecting a net rack. The lifting point conversion part 1-2 can connect the lifting point with the self-balancing adjusting part 1-1 and the grid frame, so that the stability of the grid frame structure in two directions in the lifting plane is greatly improved, the balance and stability control in the grid frame lifting process are facilitated, and the concentration force of a single lifting point is reduced through the arrangement of a plurality of lifting points.
The temporary support 2 for the overhead repairing rod of the grid node comprises a temporary support bottom plate 2-2 and a temporary support 2-1, the temporary support bottom plate 2-2 is fixed on a support beam 8 through a temporary support connecting bolt 2-3, the support beam 8 is fixed on a temporary support frame 3, the temporary support bracket 2-1 is arranged on the temporary support bracket bottom plate 2-2 through welding, the top appearance of the temporary support bracket 2-1 is consistent with the appearance of the net rack node ball for the high-altitude supplementary rod, and the top of the temporary support bracket 2-1 is used for placing the high-altitude supplementary rod net rack node ball 6.
A construction method of a net rack integral installation device comprises the following steps:
1) And installing a grid original structure support at the top of the structural column 7, and lifting the grid original structure support to an elevation reference point of a design site as a grid.
2) According to the height reference position of the original net rack structure support, a temporary support frame 3 is installed in an area surrounded by the structural columns 7, and then a supporting beam 8 is welded at a section of the temporary support frame 3, which is about 200mm below the net rack design elevation. Then a temporary support bracket 2-1 is welded on the temporary support bracket bottom plate 2-2, the temporary support bracket 2-1 is positioned at the horizontal projection position of the grid node ball 6, the top of the temporary support bracket 2-1 is provided with a groove matched with the external dimension of the grid node ball 6, and the temporary support 2 for the high-altitude rod supplementing of the net rack node is manufactured, and then the temporary support supporting bottom plate 2-2 is fixed on the supporting beam 8 by adopting the temporary support connecting bolts 2-3.
3) And assembling a grid structure on a construction site, temporarily not assembling grid ball joints overlapped with the temporary support frame 3 at a horizontal projection position and grid rod pieces, and carrying out subsequent high-altitude rod supplementing operation after the grid is lifted into position.
4) Two symmetrically arranged temporary balance supports 1-1-2 are arranged on the top of the temporary support frame 3. Then the lower first supporting short column 1-1-3-4 is welded at the center position of the top of the temporary supporting frame 3, then the upper first supporting short column 1-1-3-4 is fixedly connected with the top end of the lower first supporting short column 1-1-3-4, and then the upper first supporting short column 1-1-3-4 is connected with the lower balance supporting main lug plate 1-1-3-1. And then manufacturing a self-balancing adjusting carrying pole beam 1-1-1, selecting the self-balancing adjusting carrying pole beam 1-1-1 with a specified length according to a design drawing, drilling holes at the design position of the self-balancing adjusting carrying pole beam 1-1, wherein the drilled holes have diameters matched with the diameters of the lifting ropes 5, and welding the upper balance supporting main lug plate 1-1-3-1 at the central position of the bottom of the self-balancing adjusting carrying pole beam 1-1. And then connecting the self-balancing adjustment shoulder pole beam 1-1-1 with the temporary balancing support 1-1-2, and simultaneously adopting the balancing support steel pin shaft 1-1-3-2 to connect the balancing support main ear plate 1-1-3-1 above and the balancing support main ear plate 1-1-3-1 below to complete the connection of the self-balancing adjustment shoulder pole beam 1-1 and the main balancing support 1-1-3.
5) The hydraulic oil cylinders 4 for lifting are arranged at the design positions of the tops of the two ends of the self-balancing adjusting shoulder pole beam 1-1 through bolts, then the lifting rope 5 penetrates through holes formed in the self-balancing adjusting shoulder pole beam 1-1, the lifting point conversion part 1-2 is arranged at the lower end of the lifting rope 5, and the lower end of the lifting rope 5 and the bottom of the lifting point conversion shoulder pole beam 1-2-1 are generally fixed through welding the lifting rope tray 1-2-4. And the lifting point conversion part 1-2 is fixedly connected with the net rack, so that the lifting rope 5 is in a tensioning state.
6) And removing the temporary balance support 1-1-2 at the top of the temporary support frame 3, and reserving the main balance support 1-1-3 to enable the lifting device formed by the self-balance adjusting shoulder pole beam 1-1 and the hydraulic cylinder 4 to be in a self-balance state in a single hinge mode. And then checking all connection nodes, starting the hydraulic cylinder 4 after checking, lifting the lifting rope 5 under the action of the hydraulic cylinder 4, lifting the net rack along the temporary support frame 3 under the action of the lifting rope 5, performing trial lifting of 10-20 cm, recording working data of the hydraulic cylinder 4, adjusting lifting power of the hydraulic cylinder 4 according to the working data of the hydraulic cylinder 4, ensuring that the lifting performance is not abnormal, and improving safety.
7) And continuously starting the hydraulic cylinder 4, and stopping the lifting operation of the hydraulic cylinder 4 when the net rack is integrally lifted until the edge rod pieces of the net rack are matched with the original structure support of the net rack. And then, carrying out position adjustment on the net rack, and then, carrying out rod supplementing and welding fixation on the edge rod pieces of the net rack and the original structure support of the net rack. And then placing the net frame node ball 6 for the high-altitude rod repairing in the groove of the temporary support bracket 2-1, taking the net frame node ball 6 for the high-altitude rod repairing on the temporary support bracket 2-1 as a position reference, complementing a rod piece overlapped with the horizontal projection of the temporary support bracket 3, and connecting the complemented rod piece with the net frame node ball 6 according to design requirements.
8) The temporary support connecting bolts 2-3 are screwed out, and then the temporary support bracket 2-1 and the temporary support bracket bottom plate 2-2 are integrally removed, so that the temporary support frame 3 is not directly connected with the grid structure.
9) Two symmetrically arranged temporary balance supports 1-1-2 are installed on the top of the temporary support frame 3 again, the temporary balance supports 1-1-2 are connected with the self-balancing adjustment shoulder pole beam 1-1, then the lifting rope 5 is unloaded, the lifting rope 5 is removed, the hydraulic cylinder 4 on the self-balancing adjustment shoulder pole beam 1-1-1 is removed, and then the self-balancing adjustment shoulder pole beam 1-1-1 is removed.
10 The temporary balancing stand 1-1-2 is removed again on top of the temporary supporting frame 3 while the main balancing stand 1-1-3 is removed.
11 The temporary support frame 3 is removed, and the integral installation work of the net rack is completed.
1. Before the grid frame is lifted, two symmetrically arranged temporary balance supports 1-1-2 are firstly arranged on the top of a temporary support frame 3, then a main balance support 1-1-3 is arranged at the central position of the top of the temporary support frame 3, then a self-balancing adjusting shoulder pole beam 1-1-1 is connected with the temporary balance support 1-1-2, meanwhile, the self-balancing adjusting shoulder pole beam 1-1-1 is connected with the main balance support 1-1-3, the temporary balance support 1-1-2 plays a role in temporarily supporting the self-balancing adjusting shoulder pole beam, then a hydraulic cylinder 4 and a lifting rope 5 are arranged on the self-balancing adjusting shoulder pole beam 1-1, then a lifting point conversion part 1-2 is arranged at the lower end of the lifting rope 5, then the lifting point conversion part 1-2 is fixedly connected with the grid frame, the tension provided by the lifting rope 5 is ensured to be in a tensioning state, the two-direction stability in the lifting plane of the grid frame structure is greatly improved, the centralized stress of each lifting point is conveniently reduced, the lifting stability of the lifting point is conveniently controlled, and the self-balancing system of the self-balancing system 1-balancing the lifting system is stably formed in the lifting process of the self-balancing adjusting shoulder pole beam 1-1. When the net frame is lifted, the main balance support 1-1-3 is arranged at the center of the top of the temporary support frame 3, the two temporary balance support 1-1-2 are removed, acting force generated when the hydraulic cylinder 4 is lifted is transmitted to the temporary support frame 3 through the residual main balance support 1-1-3, the self-balance adjustment shoulder pole beam 1-1 and the main balance support 1-1-3 are connected through the balance support steel pin shaft 1-1-3-2 arranged between the upper and lower balance support main ear plates 1-1-3-1, the upper and lower first support short columns 1-1-3-4 are fixedly connected with each other, a single-hinge joint system is formed between the first support short columns 1-1-3-4 arranged below and the temporary support frame 3, the temporary support frame 3 is ensured to be in an axle center stress mode, self-balance is realized between symmetrical stress points on the temporary support frame 3, eccentric stress conditions of the temporary support frame 3 in the lifting process are avoided, the center of the lifting device and the center of the temporary support frame 3 are on the same straight line, and axle center stress of the temporary support frame 3 is ensured.
2. When the temporary support 2 is used for manufacturing the overhead repairing rod of the grid node, the horizontal projection position of the grid node ball 6 on the temporary support bottom plate 2-2 is welded with the temporary support 2-1 consisting of a plurality of vertical steel plates, and the top of the temporary support 2-1 is provided with a groove with the same shape as the grid node ball. When the net frame is lifted in place, the net frame is lifted to the edge rod pieces of the net frame integrally and the net frame original structure support are matched as the reference, then net frame node balls 6 for high-altitude compensation are placed in the grooves of the temporary support 2-1, the net frame node balls 6 for high-altitude compensation are used as the position reference, the rod pieces overlapped with the horizontal projection of the temporary support frame are completed, the completed rod pieces are connected with the net frame node balls 6 according to the design requirement, the net frame is accurately compensated before the temporary support frame 3 is removed integrally, the net frame structure is formed integrally, the safety in the lifting process of the net frame structure and the construction accuracy are improved, and the construction efficiency is further improved.
3. According to the invention, the temporary support bracket 2-1 and the temporary support bracket bottom plate 2-2 are integrally removed, so that the temporary support frame 3 is not directly connected with a grid structure, then the temporary balance support bracket 1-1-2 is reinstalled to release the lifting rope 5, the hydraulic cylinder 4 on the self-balance adjustment shoulder pole beam 1-1-1 is removed, then the temporary balance support bracket 1-1-2 is removed again at the top of the temporary support frame 3, meanwhile, the main balance support bracket 1-1-3 is removed, and finally the temporary support frame 3 is removed. According to the invention, lifting force unloading and temporary support frame 3 unloading are performed after the grid frame is installed, the unloading steps are performed reasonably and orderly, and the safety and stability of the grid frame in place are improved under the condition that the integral structure of the grid frame is not affected.
4. All parts in the invention are finished products, the whole process is simple to operate, and the device formed by the invention adopts green steel and can be reused.
5. The invention has clear principle, easy implementation and operation, general control requirement and easy popularization.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications and the like made on the basis of the present invention to solve the substantially same technical problems and achieve the substantially same technical effects are included in the scope of the present invention.
Claims (9)
1. The utility model provides a net rack integral erection device which characterized in that: comprises a self-balancing lifting device, a temporary support for high-altitude rod supplementing of the grid frame node and a temporary support frame; the self-balancing lifting device comprises a self-balancing adjusting part and a lifting point converting part, wherein the self-balancing adjusting part comprises a single self-balancing adjusting shoulder pole beam, two temporary balancing supports and a single main balancing support, the center positions of the self-balancing adjusting shoulder pole beam and the temporary supporting frame are positioned on the same vertical line, the main balancing support is connected between the center position of the self-balancing adjusting shoulder pole beam and the center position of the temporary supporting frame, the two temporary balancing supports are symmetrically arranged on two sides of the center line of the main balancing support, two hydraulic cylinders which are symmetrically arranged are arranged at the top of the self-balancing adjusting shoulder pole beam, and a lifting rope is movably connected with the single hydraulic cylinder and penetrates through the self-balancing adjusting shoulder pole beam to be connected with the lifting point converting part; the main balance support comprises a balance support main ear plate and a first support short column, the balance support main ear plate above is welded and fixed with the self-balance adjustment shoulder pole beam, a balance support steel pin shaft is arranged between the upper and lower balance support main ear plates, the balance support main ear plate below is connected with the first support short column above, the upper and lower first support short columns are fixedly connected with each other, and the first support short column below is welded and fixed with the temporary support frame; the temporary support for the overhead repairing rod of the grid node comprises a temporary support supporting bottom plate and a temporary support supporting, the temporary support supporting bottom plate is fixed on a supporting beam of the temporary support frame through a temporary support connecting bolt, the support beam is fixed on the temporary support frame, the temporary support is installed on the temporary support bottom plate through welding, and the top of the temporary support is provided with a grid node ball.
2. The net rack integral mounting device as defined in claim 1, wherein: a first post end plate is welded between the lower balance support main ear plate and the upper first support post.
3. The net rack integral mounting device as defined in claim 1, wherein: the bottom of the first supporting short column positioned above and the top of the first supporting short column positioned below are respectively provided with a first connecting plate, and a first connecting bolt is arranged between the upper connecting plate and the lower connecting plate.
4. The net rack integral mounting device as defined in claim 1, wherein: the temporary balance support comprises a temporary connection lug plate and a second support short column, wherein the temporary connection lug plate at the upper part is welded and fixed with the self-balance adjustment shoulder pole beam, a temporary connection steel pin shaft is arranged between the upper temporary connection lug plate and the lower temporary connection lug plate, the lower temporary connection lug plate is connected with the second support short column at the upper part, the upper second support short column and the lower second support short column are mutually and fixedly connected, and the lower second support short column is welded and fixed with the temporary support frame.
5. The rack-mount integral mounting assembly of claim 4, wherein: a second column end plate is welded between the temporary connection lug plate positioned below and the second supporting short column positioned above.
6. The rack-mount integral mounting assembly of claim 4, wherein: the bottom of the second supporting short column positioned above and the top of the second supporting short column positioned below are respectively provided with a second connecting plate, and a second connecting bolt is arranged between the upper connecting plate and the lower connecting plate.
7. The net rack integral mounting device as defined in claim 1, wherein: the lifting point conversion part comprises a lifting point conversion shoulder pole beam and lifting point connection lug plates, wherein the lifting point conversion shoulder pole beam is connected with the lifting rope, the lifting point connection lug plates above are welded to the bottom of the lifting point conversion shoulder pole beam, lifting point connection steel pin shafts are arranged between the upper lifting point connection lug plates and the lower lifting point connection lug plates, and the lifting point connection lug plates below are used for connecting a net rack.
8. The rack-mount integral mounting assembly of claim 7, wherein: the bottom of the lifting point conversion shoulder pole beam is welded with a lifting rope tray, and the lifting rope tray limits the tail end of the lifting rope.
9. A construction method based on the net rack integral installation device as claimed in claim 1, which is characterized by comprising the following steps:
1) Installing a grid original structure support on the top of the structural column, and taking the grid original structure support as an elevation reference of a grid to a design site;
2) Installing a temporary support frame in an area surrounded by a structural column according to the elevation reference position of a support of an original structure of the grid frame, welding a support beam at a section of the temporary support frame, which is 200mm away from the designed elevation of the grid frame, on a support bottom plate of the temporary support, welding a support of the temporary support, which is positioned at the horizontal projection position of a grid frame node ball, and arranging a groove matched with the external dimension of the grid frame node ball at the top of the temporary support, so as to manufacture a temporary support for a high-altitude support of the grid frame node, and fixing the support bottom plate of the temporary support on the support beam by adopting a temporary support connecting bolt;
3) Assembling a grid structure on a construction site, temporarily not assembling grid ball joints overlapped with the temporary support frame at a horizontal projection position and grid rod pieces, and performing subsequent high-altitude rod supplementing operation after the grid is lifted into position;
4) Installing two symmetrically arranged temporary balance supports on the top of the temporary support frame, welding a lower first support short column at the central position of the top of the temporary support frame, fixedly connecting an upper first support short column at the top end of the lower first support short column, connecting the upper first support short column with a lower balance support main lug plate, manufacturing a self-balance adjusting shoulder pole beam, selecting a self-balance adjusting shoulder pole beam with a specified length according to a design drawing, drilling holes at the design position of the self-balance adjusting shoulder pole beam, enabling the drilled holes to be matched with the diameter of a lifting rope, welding an upper balance support main lug plate at the central position of the bottom of the self-balance adjusting shoulder pole beam, connecting the self-balance adjusting shoulder pole beam with the temporary balance support, and simultaneously connecting the upper balance support main lug plate and the lower balance support main lug plate by adopting a balance support steel pin shaft to complete connection of the self-balance adjusting shoulder pole beam and the main balance support;
5) Installing lifting hydraulic cylinders at the design positions of the tops of the two ends of the self-balancing adjusting shoulder pole beam through bolts, enabling a lifting rope to pass through holes formed in the self-balancing adjusting shoulder pole beam, installing a lifting point conversion part at the lower end of the lifting rope, and fixedly connecting the lifting point conversion part with a net rack to ensure that the lifting rope is in a tensioning state;
6) Removing a temporary balance support at the top of the temporary support frame, reserving a main balance support, enabling a lifting device formed by a self-balance adjusting shoulder pole beam and a hydraulic oil cylinder to be in a self-balance state in a single hinge mode, then checking all connection nodes, starting the hydraulic oil cylinder after checking, lifting a lifting rope under the action of the hydraulic oil cylinder, lifting a grid frame along the temporary support frame under the action of the lifting rope, firstly performing test lifting by 10-20 cm, recording hydraulic oil cylinder working data, adjusting the lifting power of the hydraulic oil cylinder according to the hydraulic oil cylinder working data, and ensuring that the lifting performance is not abnormal;
7) After the test lifting is qualified, continuously starting the hydraulic cylinder, integrally lifting the net rack until the edge rod pieces of the net rack are matched with the original net rack structure support, stopping the lifting operation of the hydraulic cylinder, adjusting the position of the net rack, then carrying out rod supplementing and connection fixing on the edge rod pieces of the net rack and the original net rack structure support, placing a net rack node ball for high-altitude rod supplementing in a temporary support groove, taking the net rack node ball for high-altitude rod supplementing as a reference position, supplementing the rod pieces overlapped with the horizontal projection of the temporary support frame, and connecting the supplemented rod pieces with the net rack node ball according to design requirements;
8) Firstly, screwing out the temporary support connecting bolts, and then integrally dismantling the temporary support brackets and the temporary support bracket bottom plates to separate the grid structure from the temporary support frame;
9) Installing two symmetrically arranged temporary balance supports on the top of the temporary support frame again, connecting the temporary balance supports with the self-balancing adjustment shoulder pole beam, unloading the lifting rope, removing the hydraulic cylinder on the self-balancing adjustment shoulder pole beam, and removing the self-balancing adjustment shoulder pole beam;
10 Removing the temporary balance support again at the top of the temporary support frame, and removing the main balance support at the same time;
11 The temporary support frame is removed, and the integral installation work of the net rack is completed.
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| CN211818248U (en) * | 2019-12-19 | 2020-10-30 | 中建科工集团有限公司 | Auxiliary supporting mechanism |
| CN112282063A (en) * | 2020-10-21 | 2021-01-29 | 广州江河幕墙系统工程有限公司 | Site intelligent construction process of complex space grid structure |
| CN112412036A (en) * | 2020-10-29 | 2021-02-26 | 中铁华铁工程设计集团有限公司 | Net rack installation construction method and net rack lifting device |
| CN112609837B (en) * | 2020-11-16 | 2022-06-14 | 中国建筑第八工程局有限公司 | Method for supplementing chord member with steel strand penetrating through truss |
| CN115492400B (en) * | 2022-09-30 | 2023-04-25 | 中国建筑一局(集团)有限公司 | Steel structure net frame lifting construction method |
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| DE2619659A1 (en) * | 1975-05-05 | 1976-12-16 | Jack Banks Caisley | LIFTING DEVICE |
| WO2017121315A1 (en) * | 2016-01-12 | 2017-07-20 | 广州机施建设集团有限公司 | Construction method for building truss and floor slab |
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| CN101408020A (en) * | 2008-11-13 | 2009-04-15 | 中铁十局集团有限公司 | Integral lifting rack of movable mould frame and method for hanging movable mould frame thereof |
| US9631379B2 (en) * | 2013-10-16 | 2017-04-25 | Neil Joseph KOOT | Building construction method and lifting device |
| CN204802884U (en) * | 2015-07-20 | 2015-11-25 | 中国化学工程第十四建设有限公司 | Storage tank flip -chip balanced hoisting device |
| CN106812328B (en) * | 2015-11-27 | 2019-02-05 | 天津三建建筑工程有限公司 | The whole two step lifting construction methods of string prestressed steel structure rack with hanging layer |
| CN208088520U (en) * | 2018-03-19 | 2018-11-13 | 浙江中南建设集团钢结构有限公司 | A kind of rack integral installation device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE2619659A1 (en) * | 1975-05-05 | 1976-12-16 | Jack Banks Caisley | LIFTING DEVICE |
| WO2017121315A1 (en) * | 2016-01-12 | 2017-07-20 | 广州机施建设集团有限公司 | Construction method for building truss and floor slab |
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